I'm having a little problem with my JComboBox.
I'm supposed to have 10 elements (Size 1, Size 2, etc.), but only the
first one shows up and I don't have an arrow to be able to see the
other ones. I know the other ones are there because I printed the

I would like to sort the string data in following format....
     ArrayList str  = new ArrayList();
     str.add("24.1.2.1.1");
     str.add("24.1.1.1" );

I decided to make a new topic out of this to start fresh.  First, let's
get to the problem.  I am developing Java on a Windows platform (that's
not the problem) and I am using a JFrame with a component inside that
must be sized according a certain aspect ratio.  The problem I am

I've been struggling to make this command work from Java:
/usr/bin/mysql c4 --user=root --password=mypass -e "source
/home/crissilva/c4.sql"
Works fine as shown when run from the shell. Using my Java program I

I am beginner doing a project for my graduation. The simple code I
developed makes me go crazy. Problemaic code is below.
ResultSetMetaData rsmd = rs.getMetaData();
int columnCount=rsmd.getColumnCount();

i have a small config-file and after i haved parsed the file into a
dom-tree, i have unexpected nodes (#text) while walking through the
structure.
--the xml file--

In my application, I have a button. When I click on this button, it will be
log off. However, there is a ConcurrentModificationException:
----------------------------------------------------------------------------
-------------

I have some super time-critical code, where I'm doing a lot of integer math
across very large arrays. Performance isn't as good as it could be. I'm
wondering if the fact that Java does bounds checking on every array access
could be slowing things up.

I have a small desktop application that writes 2 Strings to the user
portion of Java preferences.  On some Windows machines, the save does
not actually save a value.  My early analysis indicates Registry
security blocks the write.  Is there some work around?

Data is read from a server and the byteBuffer is decoded using
Charset.forName("ISO-8859-1").newDecoder().
Am I suppose to know beforehand what charset the incoming data is in?
What if it's a mixture of various charsets?  What then?

Has anyone actually got this working?  I am trying to install the AMD64
version of Java on Windows Server 2003 x64 with no success.  All of the
files are copied without error but there is no integration with the Windows
environment happening at all.  There is no Java icon in the ...

I have a EJB in my application. My quesion is when I call a function in this
bean (through an interface) like this:
........
String  name = CaseManagerGatewayUtil.getHome().create().convertIDtoName()

I'm passing a Socket object and a password (String) to a constructor for
use when sending data via the socket.  Should I store the password as a
member of the class or just use it straight away?

I have been reading about transactions in java and have some questions:
*) Which is mostly used: Container-managed transactions (CMT) or
Bean-managed transactions (BMT)? I dont have Entity Bean in my application.
*) Is this statement true: Use JTA only when the transaction involves ...

I'm writing a mapping application and would love to incorporate routing
algorithms.
I was wondering if anyone what algorithms are used in applications like
Tom Tom, or Autotroute etc..